Home / 15,251.36-21,046.64-8,536.88

Finding the Fourth Proportional to 15,251.36, 21,046.64 and 8,536.88

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Solution

The fourth proportional to 15,251.36, 21,046.64 and 8,536.88 is: 11,780.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,251.36 : 21,046.64 = 8,536.88 : x
  2. Step 2: Convert to fraction form
    15,251.36/21,046.64 = 8,536.88/x
  3. Step 3: Cross multiply
    15,251.36x = 21,046.64 × 8,536.88
  4. Step 4: Simplify right side
    15,251.36x = 179,672,640.08
  5. Step 5: Solve for x
    x = 179,672,640.08/15,251.36
  6. Step 6: Final answer
    x = 11,780.76

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.